Valve for pneumatic tires.



H. K. RAYMOND.

VALVE PoR PNBUMATIC TIRES.

APPLICATION FILED MAR. 1, 1906.

Patented Dec. 8, 1908.

TIG-.2.

a L///////V ///,7/// /M/ STATES PATENT OFFICE.

HARRY K. RAYMOND, QF AKRON, OHIO, ASSIGNOR T0 THE B. F. GOODRICH COMPANY, OF

AKRON", OHIO, A CORPORATION OE OHIO..

-vaLvE ron PNEUMATIG mss.

No. 906,159. g

Specification of Letters Patent. Appueaeon med umh 1', 190e. serial Nb. 893,683.

patented Dee. s, 190s.

To all whom it may concern:

Be it known that I, HARRY K. RAYMOND,

a citizen. of the United States, residing in the city of Akron, county of Summit, and` 'State of 0h10, 'have invented certain new and useful Improvements in Valves for valves employed as means for infiating and ldeflating pneumatic tires.

In the .present state of the art the air valve conslsts of a single straight tube -provlded'at one end wit a head adapted to seat against the inner surface of the'ar tube and containing the valve mechanism, which is usually lconstructed -to adm-it air under pressure .and to prevent its escape. To alow the air to escape the valve-mechanism must usuallybe removed entirely from the casing.

The air tube is applied to the Wheel rim when the said tube is Wholly or partially de-v flated, the valve casing being inserted in a hole provided therefor in the rim and felly.

Th valvecasingis then forced downward' until its extremity projects beyond the in-l ner surface of the felly, the air pump attached Vand air forced in to lill the tube. This form of valve presents a number of serious difficulties in practice :'For example, thehead ofthe valve casing cannot be easily reached when the tire is upon the wheel, and it is therefore diicult to force the casing downward intol place sufficiently to attachthe inating pump. To obviate this diniculty the valve casing is made considerably longer than the thickness of the felly requires, but when the valve is finally in place the casing projects unnecessarily beyondthev inner surface' of the 'felly. Moreoverthe great length vof this stem renders the opera-l tion of. applying the 'air tube and` of inserting the valve stem into the hole provided in the rim exceedingly awkward and difficult, particularly in the case of valves adapted for use with thick `or dee fellies.

The object of -m invention is to provide a valve which sha1 have a short tube which can be forced into-the hole provided for it in the rim and an extension tube sufficiently long to reach through the felly.

l v AnotherL-Object of my invention is to lprovide a valve' adapted to be used with feLlies of .diderent thicknesses.

A further object of my invention is to provide a valve which will permit the tire to be deflated Without removing the valve mechanism from its case. v

I accomplish these .objects by means of the l structure hereinafter' described and claimed, which consists essentially of a short main tube adapted to he attached tothe air tube, a removable extension tube adapted to vbe attachedto said main tube and containing the valve mechanism, and means for securing van Aair tight'joint between the said main tube and the said extension tube.

' I have shown my device as applied to a double tube tire of the clencher type, but it is equally adapted for use with single tube tires and with other forms of double tube structures.

In the drawings Fi re 1 is a cross-section of a tire, rim and fe 1y with my improved valve used in conjunction therewith the main tube, sleeve, and dust cap being shown in section and the inner extension tube being shown in elevation. Fig. 2 is .an isometric View of the several parts aof a valve, embodying my improvements. Fig. 3 is a section of the extension tube and of`a portion of the main tube showing the means similar accessories which are usually carried Een' valve c asings for various purposes. Y ese, however, constitute no part of my 1milprovement. The main tube, however, does vnot contain the valve mechanism, as is the case with vthe resent forms of tire valve, the bore of the tu being entirely clear for the passage of air in either direction. The valve l mechanism is intended to be carried within v whichcontainsthe valve mechanism proper,

the bore of an extension tube which is adapted to be removably attached to this j main tube. The lupper extremity of this extension tube is provided with a washer of rubber, leather or other similar material, seating against a circular shoulder formed within sa1d main tube, by means of which an 'air tight joint is secured between the main tube and the extension tube. The tire can thus be inflated in the usual man ner by attaching the pump to the lower terminal of the extension tube, and the tire can be detension tube, and means for securing a tight` joint between the twosections.

In my preferred form the bore of the main tube is of. increased diameter at its outer end, and has at a suitable oint a circular shoulder 10 which is adapte to form a seat for a rubber Washer upon the extension tube for the purpose of securing an air tight joint. For/a short distance within this shoulder the bore of the tube is preferabl :square or hexagonal. -The extension tu elf/comprises -a straight tube .11, having at its upper end a head 12 shaped to fit within ythe square or hexagonal bore of the main tube. Adjoining this head -is a short lneck of considerably smaller diameter, about which is placed a. washer 13 of rubber, leather or other similai` 'yielding material, adapted to seat against the shoulder 10 within the main tube. Immedi'ately adjoiningthiswasher is a collar 14 of a diameter ap roximately that of the enlarged portion lo the bore of the main tube. At the other extremity1 of the tube 11 is a threaded collar or flange 15 of somewltiJat greater diameter than the body of the tu e. bore is enlarged to receive the valve mechanism 16, which is preferably of the usual form, permitting air to be forced in, but not permitting Vit; to escape. l

While any suitable valve mechanism may be. used, I have illustrated a mechanism of the well known Schrader type, shown and described in United States Patent No. 7 24,128, dated March 31st, 1903. In a mechanism of this construction, the air enters through an orifice in plug 22, lifts valve proper 23 olf its seat on vthe plug, and passes through the passage thus opened into the valve chamber. It then passes through openings 25 in spring holder 26 into the passage 27 leading to the interior of the tire.

Within this end of the tube 11-the When air 1s not being forced through the valve, spring 24 holds valve proper 23' upon its seat and the valve is closed.

Loosely mounted upon the tube 11, and concentric' therewith is the jacket or sleeve 17, held thereon by the collar '14 and by the liange 15. There is sufficient play of the sleeve upon the tube '11 to allowv rotation of either relatively to the other. This sleeve has the same outer diameter, thread and shape as the main ltube 5, so that when the two are attached they form a substantially vcontinuous tube. One extremity of the sleeve consists of a threaded tip 18 of considerably less diameter than the main portion of the sleeve and adapted to engage within thel outer end of the main `tube which is tapped to correspond. The other extremity 19 of the sleeve I prefer to provide with flattened sides to allow the -application of a wrench. Upon the threaded flange 15 I prefer to place the vusual form of cap 20 or some similar form of closure, which may be provided with the tool for theremoval of the valve mechanism from its case. Various methods of attaching the head 12 and the collar 14 to the tube 11 will readily suggest themselves, and some removable form must be provided in order to permit the said tube to be inserted within the sleeve. I have`shown in the drawings a I'orm in which the collar and head consist of av single piece having` its outer end terminating in a threaded tip adapted to engage within a threaded socket at the upper end f the tube 11. The said tube and head may of course be made continuous and the collar shrunk upon its inner end to secure the sleeve thereon.

The operation of my device is as follows:

The main tube 5 is attached to the air tube,

its head seating against the inner surface thereof. The air tube is then laced about the rim' of the wheel and the tu e 5 inserted in the hole in the rim and felly provided therefor. This operation is easily performed. owing to the cxtreme shortness of the said tube. The extension tube is then attached to the main tube by inserting the threaded tip of the sleeve 17 within the threaded socket of the main tube and screwing the two firmly together, so that the washer 13 seats against the shoulder within the main tube. The joint resulting is sufficiently tight so that the air pump can be attached to the extremity of the extension tube and the tire inflated. When the tire is inflated to riding pressure the air pump is detached and the cap 20 applied. If desired the dust-cap 21'may be attached, which consists of the usual cap member swiveled in a block havinga surface curved to fit the felly and an aperture shaped to fit the extension tube, or any form of nut may be used adapted to seat against the under-surface of coarse vthe wheel ifelly andsecurethe extension tube ,.moved, the extension tube sleeve unscrewed and theextension tube removed, which will alllpw the vair to escape rapidly from the air t e.` i The main tube and extension tube may be made of any desired length to adapt them for use with any style of elly, or with any form of dust-cap. I

Having descrlbed my invention, what I claim is: v

l.. In a pneumatic tire valve, the combination of-a main tube adapted to be Secured to the air tube, an extension tube removably secured to said main tube, the outer. end of said extension tube being exteriorly threaded and formed with an enlarged bore, and a complete valve mechanism entirely contained in said enlarged bore the external diameter of said extension tube being .no greater than the external diameter of said main tube.

- 2. Ina pneumatic tire valve, the combination of a main tube adapted to be secured to the air tube, a removable extension tube forming a continuation of said main tube, and an elongated sleeve surrounding the extension tube for the greater portion of its length and threaded to engage the main tube, the outer end of said extension tube being enlarged to exceed 'the internal'diameter of said sleeve.

3. In a pneumatic tire valve, the combination of an' exteriorly threaded main tube adapted to be secured to the air tube, a re.

movable extension tube forming a continuation of said main tube, and an elongated v sleeve surrounding the extension tube for the greater portion of its length and provided witha reduced tip threaded within the main tube, thebod of said sleeve being of the same exterior iameter as'the main tube and formed with an exterior thread.

4. In a pneumatic tire valve, the combination of a main tube adapted to be secured to the air tube, an extension tube provided with a complete valve mechanism independent of the main tube, a sleeve surrounding the 'extension tube and united'to the main tube by a screw connection for clamping said tubes together and means for locking said sleeve against rotation.

5. In a pneumatic tire valve,- the combinationl of a main tube adapted to be secured to the air tube, an extension tube provided with a complete-valve mechanism independent of the main tube, a sleeve with flattened sides, surrounding the extension tube and 'united to the main tube by a screw vconnection for clamping said tubes together, and means for locking said sleeve against rotation comprising a block having a surface curvedv to fit the Wheel elly and an aperture shaped to lit the said sleeve.

6.`In a Wheel, a felly, a pneumatic tire supported thereby, a main tube projecting inwardly from said tire, said felly being provided with an openin to receive said main tube, an extension tu e removably secured to said main tube the ,outer portion of the bore'of said extension tube beingenlarged, and a complete automatic check valve mechanism entirely contained.A in said enlarged portion, the external diameter of said extension tube being no greater than the internal diameter of the opening in the felly.,

HARRY K. RAYMOND. Witnesses: 4

JAMES H. MoILWArN, ROY KEPLER. 

